package main

import (
	"fmt"
)

func main() {
	var num1 = 5
	switch {
	case num1 < 0:
		fmt.Println("是负数")
	case num1 > 0 && num1 < 10:
		fmt.Println("是个十进制")
	default:
		fmt.Println("比10大")
	}
}
